Punch press



Aug. 2s, 1923. 1,466,030

J. H. REECE PUNCH PRESS .Filed Oct. 30, 1920 W 7 23 v Z5 Z7 www.. @www Patented iug. 28, 1923.

JUAN II. nunon, or JOLIET, ILLINOIS, AsSIsNoa'ro .aux s rnnii sIAiurINe COMPANY, on JOLIEn'ILLINoIs, n CORPORATION or ILLINOIS.

' runen ranss.

Application filed Octoberl 30,1320.4 Serial No. 420,610.

TouZZ whom t may cmwemlV Y Be it known that I, 'JUAN H. Renon, a citizen of the United States, residing at Joliet, in the countyof vWill and State of.

may be better understood and appreciated, I will first state that in theoperatio'n of-` certain kinds of punching machines such as machines for punching washers out of bar material, the capacity of the machine haSi in the past been limited by the speed at;

which the ninched articles may be removed from the `ation vcannot commence untilthe ymaterial severed in the previous operation has beenv removed. This is'particularly true in they case of horizontal punch presses in which the punched articles are `carried awayfrom the dies by the operation of the force of gravity. The capacity of such machines is absolutely limitedby the rate at which the punched articles will fall away from the dies.

rihe main object of the present invention is to provide an arrangement for accelerating the removal of the punched articles so as to reduce thevtime interval between the punching operations. More particularly, an object in this connection is to accelerate this removal by the use of a fluid stream directed to a point where it will operate upon the punched articles as they leave the dies so as to accelerate their delivery; and still more particularly, another object of the invention is to make use of an air blast for this purpose.

Another object of the invention is to conserve the compressed air as much as possible by providing a valve mechanism or the likeV working in harmony with the other portions of the machine so as to deliver the air to the punched articles as a series of blasts properly synchronized with the move- Vments of the dies, so that each blast of air vand 1l. ies7 since a new punching .oper-1 will come justat the right time to removey vone of thepunched articles.

Other objects and uses of lthe invention will appear from a detailed description of the same which consists in the features of construction and combination of parts hereinafter described and claimed.

Referring to the drawing: Figure 1 shows a side elevation of a hori- Vzontal punch press to which Vv the features ofthe invention have been applied; and

Fig. 2 shows a longitudinal section on 'enlarged scale through the air blast mech anisin, and the valve for operating the same.

n In the drawing thehorizontal punch press is shown asrcoinprising a frame 3 supported by legs 4l and having a yoke 5 within which are mounted the female die G and the male Ydie 7.4 The frame also carries an operating shaft Sdrivenby the pulley wheel 9. A Upon said 'operating shaft are 'the cccentrics 10 Y12 which is connected to' the 'arm 'Of 9J bell `crank lever 1-3'by means of a link 14, Said bell.. crank lever beingpivotediin the frame at the point 15. The other arm 16 ofthe bell :crank lever works a reciprocating plunger 17 which has a knockout pin 18 working through the female die from the back Side. This knockout pin 18 is for the purpose of ejecting the disks orl other articles from the female die after the male .die has been withdrawn. These articles then fall or are delivered into a basket or other container 19.

The eccentric 11 carries a sleeve 2O which operatesthe male die 7 back and forth through the medium vof the plunger 21. The eccentrics are so timed that as the male die enters the female die the knockout rod 18 is in the backward position; and so 'that as the male die is withdrawn from the fen male ydie theknockout rod 18 is moved for- 23 through which a blast of compressed airV under relatively high pressure may be de-V The eccentric 10 carries a sleeve livered, either continuously or as a seriesof intermitted puffs properly timed with re-V spect to the operation of the other parts ofy the machine. ln the particular construction illustrated, the arrangement is such that the blast is delivered as a series of interinitted puffs. For this purpose a tube or pipe 24 is mounted in the frame above the female die, theV bore 25 of said tube receiving compressed air from the .connection 26. A valve stein T he rear end of therod 27passes through, a stuffing box 3l anda Spring 32-operates on said rear end to normally hold the rod in a backward position as shown by full lines in Fig. 2, and thus hold the valve normally closed. y

The upper end of the arm 17 of the bell crank lpcarries a finger 33 in position to operate onthe rod 27 and thus openv the valve in synchronism with the movements of the knockout. rod 18.

I have' found, that by the use of an arrangement of this type it ispossible to'inultiply the capacity of such machine severalfold, and infact that theircapacity is then limited. only by the rate at which the dies may be operated without overheating.Y

1While l have herein shown and described only a single embodiment of the features of.

my present invention, still l do not limit myself to the same except as l may do soin the claims.

and adapted to deliver compressed airfonto an article ejected from said die, suitable connections for delivering compressed air to Said nozzle, a valvein said connections, and

iineans for opening and closing said valve in timed relationship to the operationsV of the male die and-knockout. device, to thereby deliver putfs ofcompressed air from said nozzle in synchronous and timed relationshipl to the operations of the knockout device for ejecting punched articles, substantially as described.

2 The combination with the stationary die andthe reciprocating die and the knockout device of a horizontal punch press, one of saidv dies being a male die and the other female die, of a nozzle for compressed air adjacent to the delivery end of the female die and adapted to deliver coinpressedair onto an article ejected from Said die, suitable connections for delivering compressed air to said nozzle, a valve in said connections, and Y means for opening and closing said valve in timed Vrelationship to the operations of theV dies and knockout device, to thereby deliver puffs of compressed air to saidnozzle in synchronous and timed relationship to the operations oftheknockout device for ejecting punched articles, substantially as described.

. vJUAN iai. amaca.

Witness:

FRANK il. Misere. 

